Jean gibaud



UNITED STATES PATENT OFFICE.

JEAN GIRAUD, OF OAUDEBEC-LES-ELEEUF, FRANCE.

CLAMP.

SPECIFICATION forming part; of Letters Patent No. 299,776, dated June 3,1884.

Application filed April 7, 1884.

Figure lis a side view of my improved clamp before locking it to fastenthe article or materia1 which is to be clampcd. Fig. 2 isa similar viewshowing the device clamped or locked,

and Fig. 3 is a plan or top view.

Similar etters of reference indicate corre- 2o sponding parts in all thefigures.

My invention has relation to clamps or holding devices for the use ofcarpenters, cabinetmakers, and other artisans; and it consists in theconstruction and combination of parts of the clamping device, which willbe hereinafter more fully described and claimed, which can bereadilymanipulated by one hand, and can be applied to any work-bench ofordinary construction.

In the accompanying drawings, A denotes the top or table of awork-bench, and 1) one of several apertures 1nade therein for theinsertion of the shank or stem 0 of the device.

' The letter B denotes 'ablock of wood, which 5 is clamped upon thebench by means of the device. The stem orshank 0 bas a projecting curvedhead, 0, provided With projecting lips D at its onter end, through whichab0lt,

' d, is inserted transversely, forming a fulorum 0 or bearing for anarm, E, the outer end of which forms the clampingjaw e. The opposite endof arm E is slotted or bifurcated for the insertion of a cam oreccentric, F, which is hinged upon the bolt G and provided with ahandle, f, for operating it.

(No model.) Patonted in France September 12, 1883, No. 157,512.

From the foregoing description, taken in connection with the drawings,the manner of using this device will be readily understood. WVhen leverf is in the position shown in Fig.

1, the block B or other article to be clamped upon the table may readilybe placed under the jaw 6, as the device ean be raised or 10W- eredthrough the aperture I) in the table t0 conform to the thickness of thearticle to be clamped. By now turning handle fdown into the positionindicated in Fig. 2, it willbe seen that the jaw e Will be brought downupon the bloc]: B with considerahle pressure, so as to hold it fixed inits position upon the table. By turning handlef back into its formerposition the b1ook can be removed in a moment of time.

Iam aware that clamps of this class have been constructed beforeinvolving the combination of a stem or shank adapted to be insertedthrough an aperture in the work-bench, 6 5 a bearing at the upper end ofthe shank, and a jaw pivoted in said bearing and actuated by a cam oreccentric operated by a lever; nor do I claim this construction andcombination, broadly; but

XVhat I daim as my improvement, and desire to secure by Letters'Patentof the United States, is

The combination of the curved bearing C, having stem or shank C andprojecting lips D at its outer end, arm E, pivoted upon and adapted tobear against the bearing Cbetween its lips D, thns relieving thefulcrum-bolt d from strain, and cam or eccentric F, having handle f.

In testimony that I daim the foregoing I have herennto set my hand this24th day of Jannary, 1884.

JEAN GIRAUDi Nitnesses:

FRDRIC l\IATRY, EDWARD P. I\IAOLEAN.

